The Hillman Group 370042 Toggle Bolt, 1/8X3-Inch, 50-Pack Product Description Spring wing toggle bolt. Slotted round head screw. Base material: drywall, hollow block, plaster, tile. 1/8 x 3" Head style: round head Drill size: 7/16" Wall thickness: 3/8 to 1-1/4" Base material: drywall, hollow block, plaster, tile Holds Up to (1/2" Drywall): 50 lbs Holds Up to (C-90 Block): 45 lbs Spring wing toggle bolt Slotted round head screw Steel/Zinc finish 50 per pack. From the Manufacturer Toggle bolts come with spring-action wings and are intended for anchoring into hollow walls. The wing is designed to spread apart behind the base material upon installation for firm hold in hollow wall applications. The wing disperses the weight of the secured item over a larger area, increasing the weight that can be secured compared to a regular bolt. Features Durable toggle bolt great for hanging objects on hollow wall Comes with spring-action wings Features a slotted round head machine screw Pre-drilled hole required for installation 50 pieces per retail package USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.