Bicycle crank puller tool for square taper cranks - CCP-22 - from Park Tool USA
MatyKit Bicycle Crank Puller for Pulling Square Taper Cranks and Spline Crank Removal, with 8mm Allen Wrench, Ease of use Repairing Bike, and for Indoor Stationary Exercise Bike Crank Removal
How to Remove and Install a Crank | Park Tool
How To Use A Crank Extractor — Lost Yak Mobile Cycle Repair Shropshire