Ring 1 = 2.5mmRing 2 = 2.5mmRing 3 = 2.5mmRing 4 = 4mmRing 5 = 4mmBore = 97mmKit for 6 pistonsTruckKL300, 321D, 340, 360,387A,300K,340K,360K,WB310, KL311, FD124TractorKJ300, HL300BusRL100, AM100Unsure about compatibility? Contact us for assistance.View...