Flat arm with spring loaded roller bearings for use with SJBEX3000S and SJBEX4000S Jacking Beams. When unloaded these arms support the weight of the beam, allowing for it to run smoothly along the pit edge. In position, and when the beam is under load, the bearings retract, to leave the flat of the arm, to stabilise the lift. INSPECTION PIT - Essential accessory that allows the jacking beam to be used in an inspection pit. EASY TO USE - When unloaded, these arms support the weight of the beam, allowing it to run smoothly along the pit edge. RETRACTING BEARINGS - When the jacking beam is under load, the bearings retract allowing the flat of the arm to sit on the pit edge. VIKING RANGE - Designed for use with Sealey Viking 3 & 4 Tonne Jacking Beams.