JLG Parts Harden Grade 8 Extra Thick Washer used on numerous JLG Boom and Scissor MEWP(Mobile Elevated Work Platform) as well as JLG Telehandler Machines. This washer has an I.D. of .625(5/8"), an O.D. of 1.25(1 1/4"), a thickness of .185" and will be shipped in a Quantity of 12. Please ensure proper model and serial break before purchase.