ITEM NAME:Set of 20 Lightweight Montain Bike Water Bottle Cage Holder Bolts Screws Red Description: Brand new and high quality Screw for water bottle cage enhancement These screws can be applied to most bikes and cages Material: Aluminum Alloy Overall Length: Approx.19.3mm/0.8inch Head diameter : 8.3mm/0.3inch Thread Diameter: 5mm/0.19inch;Thread Length (L) : 14.3mm/ 0.56inch Package Includes: 20 Pieces Water Bottle Cage Screws FUZ0005790919520294.20 Pieces Water Bottle Cage Screws. These screws can be applied to most bikes and cages. Material: Aluminum Alloy.