Use at full load at any angle of orientation , Low Friction 1:0,005 , User Serviceable Ball Transfer Units - Hudson Bearings Ball Transfers Trader - Retailer from Chandigarh Ball Transfer Unit 9100A Heavy Duty - Stainless Steel Ball Omnitrack Ball Transfer 9100 (8100) Omnitrack Threaded Stud Heavy Duty Ball Transfer Unit. Incorporate an external (male) fixing thread for fitting and/or height adjustment of the ball caster (similar in appearance to setpin/bolt Omnitrack Brand - Manufacturing Ball Transfer Units Since 1954 , 120lbs Load Capacity 9100 Chrome Ball Transfer Unit (8100 Incorporate an external (male) fixing thread for fitting and/or height adjustment of the ball caster (similar in appearance to setpin/bolt).