Medium Duty Threaded Double Brake caster 1.Housisng:made of pressed steel ,zinc plated,double ball bearing screw head with total brake,wheel axle with nut. 2.Wheel material:PVC PP PU&TPR (optional) 3.Colot:red blue black white&yellow Available Sizes: Model numberWheel size (mm) Load capacity (kg) Overall height (mm) hole dia (mm) Setting pitch (mm*mm) M15-63-xxx63*328010811.5*8.578*45M15-75-xxx75*329011911.5*8.578*45M15-100-xxx100*3210013311.5*8.578*45M15-125-xxx125*3212015711.5*8.578*45Boltside:12*30 Plate thickness:3.5mm Bracket thickness:2.5mm * Please contact us if you have any questions about our available sizes.