METAL CEILING HOOKS DESIGNED FOR DROP CEILINGS – Two-Piece Hooks Lock Together Along a T-Bar on Suspended Ceilings IDEAL FOR USE IN A CLASSROOM, OFFICE, STORES, GYM, OR CHURCH Manufactured from HIGH STRENGTH ALUMINUM with a White Enamel Finish INCLUDES 25 PAIRS (50 pieces total) – Right and Left Hooks are Packaged in Separate Bags and Marked with R or L for Easy Identification ALSO INCLUDES A CLEAR SHARP TANK STORAGE BIN - Ceiling Hooks Measure 1” Wide by 1 ½” Tall – Each Hook Holds Up to 15 lbs Our metal classroom ceiling hooks are effective fastners designed for displaying student work, mobiles, signs, and decorations. The ceiling hooks "hang" from the suspended "t-bar" tracks that are common in most classrooms. Each hook includes two pieces that "clip" or "lock" together to form a secure hook for drop ceilings. The smart design allows the hooks to move freely up and down the length of the the suspended track.