So, how are these wedges placed in their respective hole? Does one have to place it so the "split" follows the desired line? Alignment/mechanism?

Yes. Figure out how you want the split to run and then place your wedges so it splits the rock in that direction as the wedges push apart the feathers. Two things I learned: Make your holes 5/8", not 3/4". I tried 3/4" holes and it didn't work as well. Also make sure you drill your holes deep enough. It's a bummer if your wedges bottom out in the hole before the split begins. Other than that, it's amazing ancient technology at work.

How deep of a hole do you drill? The description says 1.5” but this seems very shallow considering the shim is 4.5” long.

The shoulders of the outer shims sit near the top of the hole and there has to be room for the wedge to go right through without bottoming out. Looking at the dimensions in the diagram about 4" minimum depth. If the wedge does hit the bottom it can be extracted by drilling a second hole alongside but it's best to avoid that. The description also says a hole 0.5" diameter and that's wrong too.

Some of the shims have bent at the narrow place and then broken off. How does one get replacements?

Buy more, there’re cheap👍🏼👍🏼

Wedge is approximately 4-1/4" long.

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abuff 10 Packs of Heavy Duty Wedge and Feather Shims, 5/8 Inch Plug Shim and Wedge Concrete Rock Stone Splitter Hand Tools

Product ID: 288878406

Details

Blade edge
Straight
Blade material
Alloy Steel
Brand
Abuff
Handle material
Rubber
Size
5/8 Inch

🔥Heat-treated alloy steel for max hardness

⛏️5/8 inch plug shim fits standard drill holes

🛠️10 heavy-duty wedge & feather sets

335.18 DT

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Description

⛏️ Split with precision, power, and pro-level performance!

COMPLETE 10 PACK SET - Each set includes 1 rubber ring, 1 wedge, and 2 shims—ready to tackle multiple projects without downtime.
ERGONOMIC SAFE USE - Designed for hand use with clear safety instructions to keep you protected while delivering powerful splitting force.
VERSATILE FIT SIZE - 5/8 inch diameter plug shims fit standard quarry drill holes, making it ideal for both DIY pros and seasoned masons.
PRECISION STONE SPLITTING - Achieve clean, controlled splits in granite, marble, concrete, and rock with professional-grade wedges and shims.
DURABLE HEAT TREATED STEEL - Crafted from high-hardness alloy steel with heat treatment for unmatched toughness and longevity on tough materials.

The abuff 10-Pack Heavy Duty Wedge and Feather Shims set is engineered for professional and DIY stone splitting tasks. Featuring heat-treated alloy steel components sized at 5/8 inch to fit standard drill holes, this durable kit delivers precise, controlled splits in granite, marble, concrete, and rock. Each set includes wedges, shims, and rubber rings, ensuring a complete, ready-to-use solution for efficient quarrying and masonry projects.

Specifications

ASIN	B07F7Y1T5X
ASIN	B07F7Y1T5X
Best Sellers Rank	#105,094 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #29 in Masonry Chisels
Blade Edge	Straight
Blade Material	Alloy Steel
Brand Name	Abuff
Customer Reviews	4.5 4.5 out of 5 stars (442)
Customer reviews	4.5 4.5 out of 5 stars (442)
Date First Available	6 October 2018
Handle Material	Rubber
Is Discontinued By Manufacturer	No
Item Dimensions L x W	10.2L x 10.2W centimeters
Item Weight	454 g
Item model number	ABUS-shimwedge-10pcs-blk-180704
Manufacturer	abuff
Manufacturer	abuff
Manufacturer Part Number	ABUS-shimwedge-10pcs-blk-180704
Model Number	ABUS-shimwedge-10pcs-blk-180704
Number of Items	10
Number of Packs	10
Product Dimensions	10.16 x 10.16 x 0.25 cm; 453.59 g
Set Name	10-Pack Wedge and Feather Shims Set
Size	5/8 Inch
UPC	663585691485
Unit Count	10 Count

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335.18 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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