Upgrade your rack-mount installation experience with our Toolless Hand‑Twist Rack Screws & Cage Nuts Combo – the easiest and safest way to mount servers, switches, AV gear, and more in a 19″ square-hole rack.The knurled thumb screws allow hand-tightening without tools, while the integrated Phillips drive (PH2 compatible) offers flexibility. Paired with 19″ square-hole cage nuts, this kit ensures secure mounting in seconds 1.No tools needed: Just insert the captive cage nut into your rack's square hole, hand-twist the knurled screw until securely tightened—under 5 seconds! 2.Optional PH2 cross-slot: For those preferring a power tool or screwdriver, our screws still support PH2 compatibility. 3.Protective silicone washers: Prevents metal-on-metal contact, reduces wear, and ensures a snug, vibration-resistant hold. 4.Versatile & safe: Works flawlessly across all standard 19″ server racks and cabinets—no more mismatched hardware. 5.Engineered for excellence: Heat-treated carbon steel delivers toughness, durability, and peace of mind—free from toxic coatings.