1 Material iron2 Purpose A hitch for attaching a bicycle trailer to the rear axle of a bicycle3 Applicable suitable for most bicycle trailers4 Features sturdy and durable not easy to rust easy to connect wide applicability5 Bolt hole diameter about 11 mm6 Diameter of trailer handle rod hole about 7 mm7 The diameter of the shaft nut recessed area about 22mm8 Bottom plate length about 55 mm9 Weight Set 1 430g Set 2 381g Set 3 233g Set 4 172g
