Arrow Shed AT101 Attic/Work Bench Kit Corkscrew anchors are ideal for smaller and sloped-roof-style sheds. Four corkscrew-type anchors Four corner gussets Four locking washers Two AK600 kits are required for sheds 10'x10' through 10'x14' (larger sheds require concrete anchor kits, see your instruction manual for details for sheds larger than 10'x9')