As a starting point let's consider the ALZRC 20-Inch Reversible Bit Holder for 13.5/18/21mm Bit Screwdrivers.
This tool pallet screwdriver bit holder is made of plastic and features 20 holes of various sizes to accommodate different screwdriver bits. It is designed to hold bits with diameters of 13.5mm, 18mm, and 21mm.

What distinguishes the ALZRC 20-Inch Reversible Bit Holder is its versatility and ample space for multiple bits. With its 20 holes of varying sizes this holder can easily store a variety of screwdriver bits. The plastic material used in its construction is lightweight and durable, ensuring it can withstand regular use. However, it's worth noting that this holder does not come with screwdrivers included.

One of the clear advantages of the ALZRC 20-Inch Reversible Bit Holder is its ample space for multiple bits. Additionally the plastic material used in its construction makes it both lightweight and durable. On the downside, it does not come with any screwdrivers included, which may be a drawback for some users.

In conclusion the ALZRC 20-Inch Reversible Bit Holder for 13.5/18/21mm Bit Screwdrivers is an outstanding choice for those looking for a versatile and durable holder to store their screwdriver bits. Its 20 holes of varying sizes provide ample space for multiple bits, and its plastic construction ensures it can withstand regular use. Although it doesn't include any screwdrivers, it should unquestionably be taken into account as a strong contender for a tool pallet screwdriver bit holder.