Reviews: Astro BK15 + BF15 Ball Screw End Support Bearing Blocks for SFU 2005 Astro BK15 + BF15 Ball Screw End Support Bearing Blocks for SFU 2005 [RKI-6011] - ₹3,750.00 : Robokits India, Easy to use, Versatile Robotics & DIY kits