The PEAK Pedestal Base: is the most stable, well thought out base you&';ll find. An oversized 6"x 6" footprint combined with the weight of steel, supported on non-skid, non-marking feet will keep your vise right where you put it. White powder coat finish is durable, easy to clean, and provides a great backdrop to see hooks and materials. Integral hook/bead pocket has rounded corners for ease of retrieval. Also includes our Accessory Shaft mounting hole. Fits vises with a 3/8" riser shafts. The Peak Large Professional Base: Five mounting holes accept 3/8" diameter shafts such as PEAK&';s PRV and PNRV vises and PEAK&';s Accessory Shaft. Four integral hook / bead pockets with rounded corners for ease of retrieval. Features an extremely stable 8" by 10" footprint that will keep your vise right where you put it.