OTC Tools OTC 1899 10-Ton Capacity Press Accessory Set. Adapters and accessories are attached to the ram's forcing screw or used on the press bed to support the work. Set includes: OTC201923 ram pushing adapter with 1/2" dia shank; OTC201454 ram pushing adapter with 3/4" dia shank; OTC34806 V-pushing adapter; OTC1890 V-blocks (pair). .