FEATURES: DuoPower Anchors are a two piece plug design that optimizes strength in all base materials and in all applications. Recommended for use in all base materials including drywall, plaster, tile, all masonry. PRE-DRILLING REQUIRED: Ensure hole depth is at least 2 times the length of the anchor SITS FLUSH: Insert anchor flush with surface for complete, secure use BEST-IN-CLASS FEEDBACK: You can feel when the anchor is set and holding as intended DUAL-MATERIAL COMPONENTS: Parts offer increased performance by being engineered with two separate functioning nylon components FOR VIBRATION AND SHOCK LOADS: When using in a project where loosening due to vibration is a concern, reduce working load by a safety factor of 4 SCREWS INCLUDED: Package includes Phillips pan-head screws to eliminate the guesswork of installation Packages include Phillips pan-head screws for simple installation with no guesswork Kit includes: #6-8 x 1" anchors, #6 x 1-3/8" Phillips screws, #8-10 x 1-3/16" anchors, #8 x 1-9/16" Phillips screws, #2 Phillips bit, 3/16" drill bit, and 1/4" drill bit