20MM 24MM Hammer drill models are recommended for your reference, the link is as belows

https://www.china.cn/product-detail/20mm-Electric-rotary-hammer-drill_60326746480.html

https://www.china.cn/product-detail/24mm-Electric-rotary-hammer-drill_60312092960.html

We have more than 13 years experience of high-performance tools including electric drill, angle grinder, electric blower, jack hammer, polisher, tool set, house holding, as well as related accessories.

Our products have all major international safety approvals and we have an experienced team, enable us to supply reliable quality, reasonable prices and excellent before & after sales services to the customers. 
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