4:1 Pitch Plastic Coil Bindings — 36" Coils

Description: Bind manuals, workbooks, and reports with a spine that opens a full 360 degrees and resists warping under daily handling. These 4:1 Pitch Plastic Coil Bindings come pre-cut to 36" for use with 13.5" electric punch-and-insert equipment (compatible with the Coil Mac Ex and similar 13.5" inserters), letting your bindery cut coils to length on demand instead of stocking pre-sized spines for every book thickness.

Why Plastic Coil Holds Up Better Than Comb or Wire:

360-Degree Lay-Flat Rotation: Documents open completely flat and wrap back-to-back without stressing the spine.
Won't Crack or Split: Flexible PVC coil resists the cracking that rigid comb spines develop over repeated use.
One Length, Every Book Thickness: Cut to size from a 36" coil on your punch-and-insert machine, so a single stocked length covers the full range of diameters below.
Snag-Free Insertion: Smooth helical profile threads through punched holes cleanly on manual or electric inserters.

Coil Diameter, Sheet Capacity & Book Thickness:

Coil Diameter	Max Sheets	Max Book Thickness
6 mm	30	1/8"
7 mm	40	5/32"
8 mm	50	3/16"
9 mm	60	7/32"
10 mm	70	9/32"
11 mm	80	5/16"
12 mm	90	11/32"
13 mm	100	3/8"
14 mm	110	7/16"
16 mm	125	1/2"
18 mm	140	9/16"
20 mm	160	5/8"
22 mm	180	11/16"
25 mm	210	13/16"
28 mm	230	15/16"
30 mm	250	1"
32 mm	265	1-1/16"

Product Specifications:

Pack Quantity: 100 coils per box.
Pitch: 4:1.
Coil Length: 36" (cut to size on your punch-and-insert equipment).
Stock Color: Black.
Other Colors: 45 additional colors available by special order — call 800-437-4787 or email sales@poppbinding.com for pricing and lead time.

Terms: Net 30 · Minimum Order $25.00 · F.O.B. Shipping Point. Prices subject to change without notice.