Yes a rotary hammer is what you need for concrete.
GBH 2-24 DRE Rotary Hammer with SDS-plus  :thumbsup: u can get for about 430-440 for this model from other seller like geolaser or intechmachinery or protools or jiayiwg89 or happyyow instead of official mall geh.
These are the ones I am happy buying from.
Some other hardware shop lixxhxxhxxxxxxx tarak bagus, keep my order waiting for two months during MCO and never ship out.

U can verify their shop on bosch authorised dealer list on the bosch malaysia site. Only thing, they may not throw in free bits but the diff in price, you can get own bits, and if you not using the "free chisel" then can just buy tool only (confirm it come with the hard case before buying).

SDS Plus bits

u can see what size u need, wall plug one is usually 5.5 (narrow plug and narrow screw) or 6mm for easy fit (fatter plug and screw)
just because its a bosch tool, no need to buy bosch bit, u can use makita or hitachi or other brand bits janji its SDS Plus bit - for SDS Plus tool (common standard).

Bits about 20 bucks or cheaper if u can find them in a 5-bit pack.
https://shopee.com.my/Hikoki---Hitachi-5pcs...bRoCcG4QAvD_BwE

https://shopee.com.my/-100-ORIGINAL-MAKITA-...5758.6934793737
CHUCK ADAPTER
this is used for adapting the round shank bits to the SDS Plus tool. typically 10-15 bucks.
It is used if u wanna drill metal or wood with the rotary hammer, these materials are NOT repeat NOT using impact function so the bits always come in round shank.

the chuck adapter CANNOT be used in impact mode (impact-only means bangwall without turning, used for chiselling the wall / rotary hammer means turn and bang).
https://shopee.com.my/-100-ORIGINAL-MAKITA-...5758.6934793737