... manufacture all kinds of screw support block and sliding platform, have high precision machining, guaranteed quality, reasonable price. Welcomes ... -642 X 20 X 25 0.10Bearing support blocks, support blocks, nuts, cover, sleeve 150.00 BUK-852 X ... nuts, cover, sleeve 220.00 BUK-25105 X 48 X68 2.91Bearing support blocks, support blocks, nuts, cover, sleeve 260.00 FOBtianjin:22$ (Rectangular) screw support ...