Comparison : Item # 553892, Bolt, leveling, 3/8" -16 x 2" (4 required)
Item # 509581, Latch and keeper (requires welding)
Item # 523161, Hose with fittings, 1/4" x 16', dust collector
Item # 521081, Adapter, 1/4" tube x 1/4" MPT (inlet)
Item # 551852, Bolt, 3/8" -16 x 1 1/4" (6 required)