Harbor Freight has a very good , inexpensive pump which has both SCHRADER and PRESTA...........the plastic nozzle has Schrader on TOP and Presta on BOTTOM in the same stacked fashion as an over & under headlight assembly from a 1965 to 1967 FORD, CADILLAC, or PONTIAC....
See the picture in the link below from Harbor Freight's website. You'll notice that the picture has the LEVER in the "DOWN" Position (or you could call it the "Install-Release" position)..................You see that you Install It on to your Valve Stem and THEN YOU MUST FLIP THE LEVER "UP" to secure it.........and of course THEN ONCE PUMPING IS COMPLETED, You Must Flip The LEVER back "DOWN" to RELEASE IT.
That other little off white, almost clear tiny plastic thingy attached near the top of the pump IS JUST A SMALL CONTAINER which includes a standard Football/Basketball INFLATION NEEDLE.....that is how the pump comes from Harbor Freight....that off white almost clear plastic thingy small container that houses the INFLATION NEEDLE is not permanently attached to the pump, and can be removed in two seconds.
My advice would be to go direct to harbor freight DOT COM and then WHERE IT ASKS YOU: 'What Are You Looking For Today?' just answer: bicycle pump.
Why? Because doing it this way will likely also give you the applicable 15% or 10% or 20% COUPON CODE that is currently applicable on this pump that is shown in the harbor freight link below. If you are not familiar with HF , they usually have applicable % OFF COUPONS all the time.....prior to the start of the pandemic (circa Feb 2020) HF had paper flyers with coupons, etc at the front of each store as you entered and they also printed them in magazine ads, direct mailers, and in Sunday newspaper inserts. Paper coupons/in-store-flyers were ELIMINATED at the start of pandemic for sanitary reasons and since then everything has been Electronic where existing customers who wish to receive such coupons and info on upcoming sales etc, receive electronic notices, etc.......... New customers and anyone else can check their site for the applicable coupon codes, etc.... I do suggest doing that.
I have owned this exact model HF pump since at least 2017 and I purchased it in a HF store for just under $10 with the discount at that time.
The very basic built in Dial Gauge that displays the PSI air pressure is not accurate and precise as to the needle pointer and number display......well lets just say that it's stable and relative IN THE SAME WAY AS car speedometer displays were from the 1950's through the 1970's & 1980's................RELATIVELY SPEAKING IT WILL SHOW THAT YOU'RE IN THE BALLPARK, BUT THE SIMPLE MECHANICAL NEEDLE DISPLAY ON A PRINTED BACKGROUND SCALE OF NUMBERS IS CERTAINLY NOT ANYWHERE CLOSE TO CALIBRATED ACCURATELY. You will need a separate high quality digital tire gauge if you want precise readings down to the individual pound psi reading... Having said that, this inexpensive, basic pump does a decent enough job, that you'll forget that it is an el-cheapo Harbor Freight offering.
http://www.harborfreight.com/high-fl...ump-63304.html