Rubber exhaust sling, 4" between hole centres, 6" overall length.

Used  on the DB MkIII single pipe STD systems, 3 per car

Used with sling tube spacer x 12, clamp plates x 24 & MkIII centre bracket x 4

Used on the DB4 as the hanging slings under the centre x 2, the rear x 2  are the short ones 20-35-128 x 2.

Also used on DB5 & 6 as the joining sling under the rear seat, the hanging sling is the short one x 2 = 20-35-128

These slings last a long time if using the correct tubes and clamp plates, possibly 30 or 40 years.