GBC CombBind Binding Spines - 50 / BX - 2 Maximum Capacity - 500 x Sheet Capacity - 19 x Rings - Round - Black - Plastic - 50 / Box

These durable, 19-ring binding spines are compatible with any comb-style binding machine and 19-hole, prepunched accessories. Use the CombBind binding spines to produce neatly bound documents and presentations. These durable, plastic spines allow pages to lie flat and won't scratch, chip, peel or discolor.

• Reusable design lets you add and remove letter-size pages for quick edits
• Rigid plastic won't scratch, chip, peel or discolor for lasting use
• Use in GBC and other plastic comb binding machines (sold separately)