The essential guide to product selection
10–30
GB3 2litre ×10 (10303V), £3.69; GB3S 2litre ×10 (10GB3S), £6.40; GB3S 2litre ×30 (30GB3S), £18.79; GB4 2litre ×10 (10400W), £15.08; GB5 3litre ×10 (10330Y), £6.50; GB5S 3litre ×10 (10GB5S), £9.08; GB6 3litre ×10 (10430U), £19.07