Stubbs BSJA Show Jump Cups & Pins. The Stubbs BSJA Show Jump Cups & Pins are heavy duty show jump cups ideal for use with show jump wings. The Cups are made with heavy duty steel to the BSJA pattern and feature a centrally welded chain allowing pins to be inserted from either side. Weight 1.75kg. Suitable for 6cm thick uprights. Sold as a pair.