There's a square 1/4" socket adapter as well as Wera's clever Rapidapter that enables one-handed changing of bits while providing secure bit holding so you're not scrounging around on the ground trying to find the critical but that just fell out

SID Select+

with the Cam-actuated micro-adjustable clamp fitting 22 mm–76 mm diameter tubes and seat posts of any shape and material

No dimensions are currently available

Cane Creek Ergo Control Bar Ends - Bar Ends - Black Dropship There's a square 1/4" socketThe Cane Creek Ergo Control Bar Ends offer the perfect solution for adventure cyclists, e bike riders, commuters, and mountain bikers who desire more comfort, more control, and more options. Features: Comfortable Ergonomic shape. Lock on style bar end for 7 8" (22. 2mm) handlebar. 179g per pair.