Detailed description
There is no single grade of hook and loop, only grades matched to a job. The material, the width and the put-up below are the three variables worth settling before the first order, because changing any of them later re-opens the price.
What the buyer is choosing
Two things decide whether a roll suits an automated line: the width tolerance at the core and the outside of the roll, and whether the put-up is splice-free. Ask for both in writing. A supplier who quotes a tolerance only for the finished carton is quoting the wrong measurement.
The material question
The fibre is nylon (polyamide). It takes dye deeply, which is why the colour range is wide and why the colour holds through washing at 40 degrees. Its weakness is moisture regain: a nylon roll absorbs water in transit, measures wide on arrival and settles back over about a week, so allow for it in incoming inspection rather than rejecting the lot.
How it is quoted
Quotations are built from construction, width and colour, in that order. Change any one of the three and the price moves, which is why we ask for all three before quoting instead of sending a range and adjusting afterwards.
What ships with the goods
Each carton is marked with the lot number, width, colour and quantity, and the lot report references the same number. That is what makes a claim traceable six months later instead of a conversation about photographs.
Checking it on arrival
On arrival, measure the width at the core and at the outside of the roll before you cut anything. A roll that measures wide at one end and nominal at the other was slit under uneven tension, and the whole lot will behave the same way on your line.
Send the grade, width and colour with the annual volume and the quote comes back against a real construction rather than a catalogue range.