Hand Exercisers features:Professional Men's Wrist Exerciser and Finger Trainer,red Color: we send based on the color or size of the main image of the product page. Quantitywe send based on quantity on title, if there is no quantity in the title, we send based on description.Product: Foam Grip Material: Foam+72A spring steel Size: about 13x9cm Color: blue and black / red and black Features: 1. Thickened foam 2. Rugged 3. Easy to carry 4. Approximately 20 kg grip strength (unisex) Use benefits: Strengthen the grip of the arm muscles. It helps the blood circulation in the arm area and makes the arm muscles stronger. It helps to assist patients with hand muscle contusion to recover quickly. Please note: The options are subject to the first pictures.