DURA LIFT 130 lb Heavy Duty Doubled Looped Garage Door Extension Spring (2 Pack) DLEY130 Bearings = 6200ZZ This single platform seamlessly integrates DLTY226B This single platform seamlessly integrates with your Double 16 Foot Box Contents Fasteners 10 x 13 Ball Nylon Rollers 90 x Self Tapping Screws (7 16" 20tpi x 1") 11 x #1 Hinges 20 x Lag Screws (7 16" x 2" HH) 2 x #2 Hinges 16 x Carriage Nuts Bolts (1 4" 20tpi x 5 8") 2 x #3 Hinges 12 x Tap Nuts Bolts (5 16" 7 16 head x 1") 2 x Top Brackets 6 x Carriage Nuts Bolts (3 8" 16tpi x 1") 2 x Bottom Brackets 4 x Lag Screws (7 16" x 2 make sure to measure the weight of your door (professional installation recommended) DURA LIFT 130 Pound Heavy Duty Extension Garage Door Spring 2 Packs are extension spring replacements for broken sectional garage door extension springs for 7' tall doors