In your instruction manual, this part appears on the parts list as:

Item No	Models
B22	LittleMachineShop.com 5550 HiTorque Bench Mill Various SX2.7L-US SIEG Bench Mill LittleMachineShop.com 6550 HiTorque Bench Mill LittleMachineShop.com 6570 HiTorque Bench Mill
B23	LittleMachineShop.com 5500 HiTorque Bench Mill Various SX2.7-US SIEG Bench Mill LittleMachineShop.com 5520 HiTorque Bench Mill LittleMachineShop.com 6500 HiTorque Bench Mill
D18	LittleMachineShop.com 6770 HiTorque Large Bench Mill
D29	LittleMachineShop.com 6750 HiTorque Large Bench Mill LittleMachineShop.com 6700 HiTorque Large Bench Mill Various SX3.5-US SIEG Large Bench Mill

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