This is Jack Up and Down Control Knob from Miller Industries. It is used on Control Assemblies of many Miller Wreckers that use a Jack control. These wreckers include Century, Challenger, Holmes and Vulcan Wreckers. Please see the features below for a list of wreckers and see the brochure tab for breakdowns. Jack Up/Down Control KnobBlack w/ White TextFits:Century 712 & 716 Wrecker Formula IIIT (04/1997 – Current)Century 820 Wrecker IIIT (02/1997 – Current)Century 1040B SDU (10/1994 – Current)Century 1040B SDU3 (06/2005 – Current)Century 1040S SDU (08/2000 – Current)Century 1060 SDU 2 (12/1998 – Current)Century 1060S SDU2 (01/2000 – Current)Century 1060S SDU3 (03/2006 – Current)Century 1075S SDU4 (11/2007 – 07/2011)Century 1075S SDU4 REV A (07/2011 – Current)Century 1140 & 1130 SDU4 & LDU, REV A (11/2009 – Current)Century 3212 (04/2004 – Current)Century 3224T (06/1996 – Current)Century 4024T T2 (01/1999 – Current)Century 5025T (04/2000 – Current)Century 5030 REV A (01/1999 – Current)Challenger 6807, 8807 & 9907 SDU2 (01/2002 – Current)Challenger 9909 & 8808 Rotators (12/2001 – Current)Challenger CH-16 (07/1996 – Current)Challenger CH-20T / T2 (07/1996 – Current)Challenger CH-30T / CH-30T3 (06/1996 – Current)Challenger CH-31 & CH-32 (06/2002 – Current)Challenger CH-35 (01/2001 – Current)Challenger CH-45 (05/2000 – Current)Holmes MD616T (11/1999 – Current)Vulcan V30 (05/2004 – Current)Product Dimensions: 1.5″L x 1.36″H x 1.36″HInside Diameter: .3″Outside Diameter: 1.36″
