Measurements (Width is for the inside measurement):

• 1/2" (12 mm) wide x 3 mm thickness (fits 1/2" strap)
• THIN 3/4" (20 mm) wide x 3 mm thick (fits 3/4" strap, & matches the thickness of the ring our swivel snap hooks)
• THICK 3/4" (20 mm) wide x 3.75 mm thick (fits 3/4" strap, for a chunkier look)
• 1" (25 mm) wide x 4 mm thickness (fits 1" strap)
• 1 1/4" (32 mm) wide x 4mm thickness (fits 1 1/4" strap)
  
• 1 1/2" (38 mm) wide x 4mm thickness (fits 1 1/2" strap)