Can this hook and loop tape be cut to custom lengths for cable bundling?

Yes. It is designed to be cut to size with household scissors, so you can make cable ties to the exact length you need.

How long is each roll in this hook and loop cable tie pack, and what is the total length included?

Each roll is 15 ft (4.6 m) long, and the 4-pack provides a total of 60 ft (18.3 m).

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StarTech 4-pack 15ft (4.6m) Hook and Loop Roll - 0.5in Wide - Blue - Cut-to-Size Reusable Cable Ties - Fastener Tape - Bulk Roll - HKLP1505BL4PK

CUSTOM-LENGTH CABLE TIES: This 4-pack of 15ft, 0.5in wide reusable blue hook and loop tape (total 60ft / 18.3m) allows you to cut and adjust cable ties to the length you need without the waste of traditional single-use zip ties
REDUCE CABLE STRAIN: Industrial-strength hook and loop roll helps route cables neatly while relieving connector strain that can lead to port or device damage
INSTALL QUICKLY WITH ADJUSTABLE GRIP: Self-gripping hook and loop fastener straps offer a quick and easy solution for bundling and securing cables, ideal for on-the-fly adjustments and streamlined installs
PROTECT EQUIPMENT: Professional cable management keeps cables tidy and airflow unobstructed, supporting clean workspaces and thermal performance in racks and enclosures
THE IT PRO'S CHOICE: Our industrial-grade cable tying solutions deliver strength, reusability, and easy installation across diverse environments, and are backed by free lifetime 24/5 multilingual technical support