This Thrust Washer from Miller Industries has a diameter of 10″ and a thickness of 1/8″. It is used on many different Miller wrecker assemblies, including, SDU, LDU, Underlift, and Tower assemblies on Century, Challenger, and Holmes wreckers. Please see the brochure tab for a list of breakdowns. Included in the HD Century Pivot Pin Kit WL-5030K1 Fits:1994-Current Century 1040B SDU Wreckers2005-Current Century 1040B SDU3 Wreckers2000-Current Century 1040S SDU Wreckers1998-Current Century 1060 SDU 2 Wreckers2000-Current Century 1060S SDU2 Wreckers2006-Current Century 1060S SDU3 Wreckers2007-2011 Century 1075S SDU4 Wreckers2011-Current Century 1075S SDU4 REV A Wreckers2009-Current Century 1140 & 1130 SDU4 & LDU, REV A Wreckers2000-Current Century 5025T Wreckers1999-Current Century 5030 REV A Wreckers2000-2011 Century 7035 Wreckers1998-2010 Century 9055 Wreckers2001-2011 Century 5130 & 5230 Wreckers2011-Current Century 7035 2-Speed Wreckers2011-Current Century 5130 & 5230 Wreckers2010-Current Century 9055 Wreckers2011-Current Century 9055 3-Stage Boom & 2-Speed Wreckers1996-Current Challenger 6807 T50 Wreckers2001-Current Challenger 9909 & 8808 Rotator Wreckers1996-Current Challenger CH-30T/30T3 Wreckers2002-Current Challenger CH-31 & CH-32 Wreckers2001-Current Challenger CH-35 Wreckers2000-Current Challenger CH-45 Wreckers2015-Current Holmes DTU GEN2 WreckersProduct Dimensions: 10″L x 10″W x 0.13″HInner Diameter: 4.06″Outside Diameter: 10″