Professional leaf springs and U bolts for commercial or occasional use This is the full set of leaf springs / U Bolts / Plates and bump stop This kit consists of everything that you need for any easy replacement / installation SET INCLUDES THE FOLLOWING 1. 4 x double / twin parabolic leaf spring 2. 4 x rubber bump stop 3. 4 x base plate 4. 8 x U Bolts (complete with nuts) LEAF SPRING Professional spring for commercial or occasional use Single leaf parabolic road spring Suitable for all Ifor Williams which have a single leaf spring The bush included takes 12mm shackle pins Rubber insert with steel centre bush Replacement for ifor Williams part number C90003 Highly recommended that these springs are changed in axle sets only Also recommended that both leaf springs are changed at the same time Suitable for all Ifor Williams trailers that are manufactured from 1996 onwards DIMENSIONS - Internally - 790mm - Externally (along the flat) - 810mm RUBBER BUMP STOP Professional leaf spring rubber bump stop for commercial or occasional use This bump stop is suitable for parabolic leaf springs (both single and twin) Suitable for most trailers from 1994 onwards One bump stop is required per leaf spring Equivalent to Ifor Williams part number C80315 Rubber body and metal bottom for strength and durability as well as preventing damage to the leaf springs This listing is for 4 bump stops BASE PLATE Professional U Bolt Plate for commercial or occasional use U bolt plate suitable for both single and twin leaf springs Base clamp suitable for securing the parabolic leaf springs to trailers Suitable for ifor Williams Ifor Williams equivalent part number C31270 Can also be used for other purposes as well as for holding leaf springs SPECIFIC DIMENSIONS OF THE BASE PLATE / CLAMP - Plate dimensions 100mm x 100mm - Hole Centres - 65mm - Diameter of the holes - 15mm - Plate thickness - 14mm U BOLTS Professional U Bolt for commercial or occasional use Small U Bolt suitable for single parabolic Ifor Williams leaf springs High tensile U Bolts suitable for higher load and more critical areas Comes complete with nyloc nuts This listing is suitable for ifor Williams with single parabolic leaf springs SPECIFICATIONS OF THE U BOLTS - Total height - (this is an internal measurement of the U Bolt to the end of the thread) - 115mm - Total width (internally) - 55mm - Total thread length - 70mm - Thread size - M12 - Height form the top to the bottom - 125mm