
A spanner or socket should always be your first choice but these are all valid alternatives for badly mangled nuts, broken wing nuts etc.
-6%

Amazon.co.uk
5.0
£12.00 £12.86
IRWIN QUICK-GRIP Light-Duty (63kg) Mini (300mm) Trigger Clamp, Twin Pack, T54122EL7

Amazon.co.uk
4.0
£12.99
LATERN 10Pcs Plastic Spring Clamps, 6 Inch Extra Strength Work Clips Heavy Duty Plastic Muslin Clamps for Photo Studio Woodwork Artwork