Keystone is a Korean park golf brand offering clubs, balls and accessories through the Makemo online store. Its range caters to players with different experience levels, from beginners and seniors to advanced players seeking greater distance and control. The MK-GOLD 2026 full set uses a brass-weighted center-of-gravity design intended to support distance, accuracy and a comfortable swing. The MK-PRO emphasizes head balance and powerful impact, while the MK-MASTER is designed for precise control and consistent ball striking.

Beyond clubs, Keystone sells single and double golf bags, standard park golf balls, three-ball sets and LED balls in green, red and combination sets. The LED models have a three-piece construction and illuminate for eight minutes per activation, with battery life of up to 24 hours. The brand also offers seasonal park golf gloves, including lightweight summer and fleece-lined winter options.

Customers can browse discounted products online and access order inquiries, product questions, reviews and one-to-one consultations. The store lists weekday customer support by phone and provides notices and shopping guidance.