RL-26 26" 3-sections Ball Bearing Slide Rail 2U to 5U height 26" 3-sections Ball-Bearing Slide Rail.Extendable to 38" depth. 26"(L) x 1.79"(H) x 0.5"(Thickness) Standard screws #10-32 & Metric screws M4x6, M5x12 included Heavy-Duty 15 gauge cold rolled steel inner, intermediate and outer member, compare to third-party's 10-12 gauge. Ball bearings provide precise linear motion with smooth, silent travel. Lock-open to secure the chassis in position for easy access, more tapped screw holes on outer member, easy-mount, quick-disconnect design. Load rating up to 130 Lbs. W/additional dia. 4.4mm x 35mm slotted mounting holes (5x), mountable to most chassis (chassis width&lt; =430mm).