10 x S.51237 Metric Conical Spring Washer, ID: 12mm (Din 74361) 10 x S.51238 Metric Conical Spring Washer, ID: 14mm (Din 74361) 10 x S.51239 Metric Conical Spring Washer, ID: 16mm (Din 74361) 10 x S.51240 Metric Conical Spring Washer, ID: 18mm (Din 74361) 10 x S.51245 Metric Conical Spring Washer, ID: 20mm (Din 74361) 10 x S.51246 Metric Conical Spring Washer, ID: 22mm (Din 74361)