The bench press is one of the best known ways to work the upper body, but many people do it incorrectly. The block is usually the most difficult part to achieve, and no matter how much you fight against it, if you do not have proper technique you will not be able to achieve a good performance.
When we have a stronger core but weak triceps, it can be easier to remove the bar from our pecs, even when the load becomes very heavy, but it becomes immensely difficult in the last part of the exercise: the lockout. If you miss the lockout and want a very strong bench press, you'll definitely need to work on isolating your triceps using isolation exercises that mimic the bench press.
closed grip
This exercise is very commonly used to increase hypertrophy of the triceps, and it is definitely very useful if you tend to fail lockouts. Many don't like to perform it because it's easy to get elbow or wrist pain, but that's easily corrected when the elbows and wrists are on the same line throughout the repetition.
floor press
The floor bench press is an upper body movement that allows you to press a heavy load without undue shoulder stress. Ground presses negate leg drive, creating a pure upper body push. All the stress is focused on the chest, triceps and shoulders.
Wood Board Press
You will find it strange to see this, and it is normal. It is more commonly used by powerlifters than by bodybuilders or amateur lifters. Nonetheless, it can be one of the best exercises you can do when you want to increase blocking strength.
Bench press with chains
This exercise is also used mainly by people who are looking to maximize their marks. As we raise the bar during the concentric phase, we increase the resistance because more load appears on the chain when we lift it off the ground; which technically makes the blocking part going up much more difficult.