We produce and sell automatic hydraulic grab, clamshell. Specifications and Features: 1) Clamp shell structure material: Hardox 400 wear plate 2) Clamp sheel plate material: High tensile steel plate 50B 3) Steel Structure Material: High tensile steel plate 50B 4) All the pins & Bushings are with dust seal & greasing points 5) Grab opening by remote control, closing is by mechanical. Contact person: Abdul lathif Email: abd.lathif@ yahoo.co.id