Genuine Craftsman replacement part. Crevice tool 17863 attaches to the vacuum hose or wand and lets you vacuum in tight or hard-to-reach areas. Crevice tool 17863 attaches to the vacuum hose or wand and lets you vacuum in tight or hard-to-reach areas. The crevice tool fits shop vacuums with a 1-1/4-inch diameter hose. Please refer to list for compatibility.