Sealant, adhesive, gap filler etc. All in one application.
3 x 300ml. For universal applications. Instant grab, UV-resistant, bonds to damp surfaces. Can be used in all weather conditions.
Usually sells at over £10 per tube but is being cleared at screwfix for £2.50 for 3 tubes.
Comes with a 35 year guarantee (not sure I'd keep the receipt for that long though).