Driller Toggle 1/4" X 3" with bolts (4/pk) For heavier applications installed in drywall. No pre-drilling required. The toggle action supplies Extra holding power in drywall. The unique special features are: A self-drilling, fine centered point that helps guide the anchor into the wall with a flawless precision. A sharp cutting edge that reduces the force required to cut the material. Special locking blades and a powerful toggling mechanism that hold tightly behind drywall.