SECURELY HOLDS WINDOW SCREENS IN PLACE: : These window screen plunger pins that your screens remain in place and functional despite the bad weather. 30 PACK: Each plunger bolt set includes bolt,spring,white cap. you receive 30 bolts, 30 springs, 30 white caps. PERFECT FOR MOST SCREENS: 1 1/2" (3.8mm)plunger bolts are for standard 3/4"(19mm) screen frame. The spring loaded plunger pops into a 7/32" (5.6mm)hole. EASY INSTALLATION: the spring onto the bolt and snap closed the white cap, providing a convenient and cost-effective solution for replacing worn out pins. FIT SEAMLESSLY AND LONG-LASTING:Spring and bolt are made of aluminum,with premium plastic caps,these window screen spring plunger kits are designed for long- lasting under sun,rain and strong wind. 30*window screen pins Color: Silver Material: Metal Package Contents: 30*window screen pins Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.