ESD TR polyurethane, dark gray non-marking color, electrical resistance < 10^9 Ω (=<1 gohm), hardness 90 Shore A, excellent rolling resistance, elasticity, abrasion and high wear resistance, made of central cast aluminum. Conducts static electricity. Used in flammable, explosive or static electricity problem areas.
Ball bearing bore
The body is obtained by molding and contains z series ball bearings.
The bracket consists of a grounded steel bush with bolt according to UNI en 24017 and nut according to UNI en 24032.
Front lock with swivel top plate bracket type NL fork
Swivel top plate bracket type NL. Plate, ball brass ring and fork are made of pressed steel zinc plated finish; swivel actions: double ball lubricated with dust protection seal made of polyethylene and Main pin is integrated with the top plate and neatly riveted. Front brake is required to lock the wheel and the rotation of the top plate. 
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