4 EACH CASTER SOCKETS FOR GRIP RING STEM SWIVEL CASTERS TIME SHAVER TOOLS # H18 (MEDIUM SOCKET) Sockets fit the large legs of TIME SHAVER TOOLS painting stand: WT10 WING THING. H18 caster sockets fit TIME SHAVER TOOLS painting stands with grip ring style casters (supplied before September 2016) CASTER SOCKETS FIT SWIVEL CASTERS WITH GRIP RING STEM:7/16" DIAMETER X 1-1/2" LONG (SEE CASTER PHOTO FOR STEM TYPE)H18 CASTER SOCKETS FIT INSIDE ROUND TUBE WITH APPROXIMATELY 1-1/8" INSIDE DIAMETER (1-1/4" OUTSIDE DIAMETER)THIS SALE INCLUDES:4 MEDIUM CASTER SOCKETS, TIME SHAVER H18CASTER PHOTO IS PROVIDED TO SHOW STEM STYLE. CASTER SHOWN IS NOT INCLUDED IN THIS SALEPlease check our other auctions for small and and large caster sockets. Below is a reference list of the three caster socket sizes we make: H12 - SMALL SOCKET, FITS TUBE WITH APPROXIMATELY 3/4" INSIDE DIAMETER (7/8" OUTSIDE DIAMETER TUBE) H18 - MEDIUM SOCKET, FITS TUBE WITH APPROXIMATELY 1-1/8"INSIDE DIAMETER (1-1/4" OUTSIDE DIAMETER TUBE) H11 - LARGE SOCKET, FITS TUBE WITH APPROXIMATELY 1-3/8" INSIDE DIAMETER (1-1/2" OUTSIDE DIAMETER TUBE) If you would like a mixture of caster socket sizes, please send a message through Pricetronic immediately after purchase and we'll change the socket size mix at no additional charge. However, we must receive your message before we ship if you want us to substitute sizes. Free USPS shipping to USA addresses