Hexagon 889/4 R Standard Rapidaptor Universal Bit Holder, 1/4 inches

Works really well. Good quality!

Un peu cher mais de très bonne qualité

Wera top quality . You get what you pay for

Why paying this much for an extension makes sense for the thrifty tool buyer who uses extensions every day: I build loudspeakers, work on cars and dismantle heavily damaged antiques to build my own furniture. I have used the dewalt extensions with the sliding guide collar for over ten years, because that's what my father uses and I unconsciously adopted the practice. They are perfectly fine (I've only broken 1 out of perhaps a dozen from heavy abuse with an impact driver) and cheap but such designs add a second or so to every bit change, rising to seconds with tapered thin bits or greasy gloves. How many times have I changed bits? 10,000? 20,000? This saves a lot of time IF you use it a lot. It allows you to extend the quick release chuck on tight jobs where the stubby nature of modern 1/4 hex drivers obfuscates the fastener head without losing the convenience of a Milwaukee or similar chuck. As others have mentioned it may not hold up to impact use long term, but for drilling it's great. Considering leaving a 50mm on my smallest drill. On mine the sleeve seems to need 50-100 bit swaps to become smooth, generally a good indicator of tight production tolerances in my experience. If you write your own review please mention whether yours was the same way or not, it will help potential buyers assemble a few real world data points for tolerance/QC consistency from our reviews. The build quality seems excellent. The 100mm extension I got fits perfectly into the center hole of those klein 32 bit holders, sticking out a little on the hex end and compression fitting into the rubber on the quick release end. With a 4" screwdriver handle it's a lot of tool in a pocket. Highly recommend.

Funziona benissimo con il suo manico ma non so se anche con quelli di altri produttori. Alta qualità