ZTTO Square Tapered Bottom Bracket Tool Socket for Cartridge ISIS Bike
BIKE HAND - Bicycle Crank Puller – Crank Removal Tool for Mountain and Road Bikes with Square Taper Bottom Bracket and Splined ISIS Drive, Octalink : Amazon.co.uk: Sports & Outdoors
HowTo - Remove a square taper bottom bracket - Electricbike.com Ebike Forum
Square Taper Crankset: The Ultimate Guide (Remove and Install)