Shimano TL-FC11 Cotterless Crank Puller Make easy work of removing your crank arms with the Shimano TL-FC11 Cotterless Crank Puller. This tool is made from heat-treated steel for durability is designed for use with square and Octalink cotterless crank arms, as well as square bottom brackets with a 14mm fixing bolt. Features Heat-treated steel construction Works with square and octalink cotterless crank arms and Installation and removal of front chainwheel for square BB with 14mm fixing bolt Internal puller can be rotated with 15 mm wrench, 14 mm hex or 8 mm hex wrench Shimano part number WP-Y13098210 | Shimano | Tl-Fc11 Cotterless Crank Puller Euro Lock Package