Bag Strap Adjuster (33 ratings) £1.50 Quantity: at £1.50 each 7 in stock. Making your own purses or bags is very easy and a joy to do (and addictive!) This little thing-a-ma-jig will let you adjust the length of your bag strap. Suitable for 1" wide strapping. Colour Black Packet of 2 Check out our other Bag Making Supplies.