C.R. LAURENCE EXP2005 CRL 1/4" Hole, 1" Length 10-12 Screw Expanding Plastic Green Screw Anchors (100 Pack). This popular design in CRL Expanding Plastic Anchors gives you tremendous performance in many building materials. Nine different size options give you just the right anchor for fastening versatility, and screw applications from #4 to #16. Their color coding makes picking the right size easy also. Good weatherability and resistance to chemicals give these anchors lasting duraility.. Part Numbers Variations: EXP2005