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bolt truss sleeve block

Application: Stage construction
Function: Connect the truss beams, and drive the beams to rise and fall by hoist lifting
Material: aluminum alloy
Structure: built-in pulley

Size: 70*70*90CM

For bolt truss, Suitable for.400*400mm, 520*760mm

Supervisor material specification: 50 *  3MM 

Pulley specifications: diameter 60 * 30 thick

Number of pulleys: 16PCS

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