Item Type: Linear Guide Product Material: Stainless steel Product Model: MGW12C-150-1R Slider Size: Approx. 46 x 40 x 10.5mm / 1.8 x 1.6 x 0.4in Number of Sliders: 1Pc Slide Rail Size: Approx. 150mm / 5.9in Slide Rail Fixing Bolt Size: M4x8 Package List 1 x Linear Guide 1Guide surface hardness is HRC59.5, easy and convenient for installation, wonderful accessory and simple replacement. 2Equipped with steel ball retainers to ensure safety during transportation and easy assembly as well as safe use of sliders. 3The use of larger size steel ball to better improve the load capacity, fully show the strong load and high torsion function. 4Two row type ball cycle design, the contact angle of the ball track is 45 degrees, so as to achieve the optimize using effect. 5Made of quality stainless steel material, effectively resist oxidation, prevent rust and has long service life.