This fits your . Make sure this fits by entering your model number. 4Pcs linear rails HGH20 20mm length: 27.56 inch / 700mm, 8pcs HGH20-HA slider carriage blocks Strong bending resistance, difficultly deformed and twisted, ensuring precise linear motion, have high accuracy of the trajectory Innovative slider technology, smooth, low friction, high speed and silent operation. Can withstand the load in all directions with four-direction equal load characteristics and self-aligning to absorb installation-error With block stop as accessories to fix the block, as image 7 shows, each stop with handle for HGH20 is $4.50. We have full series of square linear rail: HGH-CA, HGW-CA, HGH-HA, HGW-CA, EGH-CA, EGW-CA and so on, with 15mm, 20mm, 25mm, 30mm, 35mm, 45mm, 55mm and 65mm to choose, please give us Amazon Message APPLICATION: Widely use in semiconductor manufacturing equipment, printed circuit boards, IC assembly equipment, medical equipment, robotic arms, precision measurement machine and other small linear motion device.